Carpenter&#39;s square.



Nm634,58|. Patented Oct; 10, 1899..

'B. H, MILLER. CARPENTERS SQUARE.

(Application filed Nov. 21, 1398. ,(No Model.)

WITNESSES: M/VENTO WW My;

A 7TORNEYS,

UNITED STATES I EATENT Fur on ROBERT ll. MILLER, OF MORRISTOWN, NEXV JERSEY.

' CARPENTERS SQUARE.

SPECIFICATION forming part of LettersPatent No. 684,581, dated October 10, 1899.

Application filed November 21,1398. soda-1N0. 697,022. (No model.)

To all whom it may concern:

Be it known that 1, ROBERT, H.'MILLER, of Morristown, in the county of Morris and State of New Jersey, have invented anew and Improved Carpenters Square, of which the following is a full, clear, and exact description.

My invention relates to an improvement in carpenters squares, by means of which the two legs may be separated and the square placed within a comparatively small box or chest. 7 v

The invention comprisesthe novel features of construction hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

with a mortise, within which a tenon B upon the short leg B is inserted. The mortise in the longer leg'A extends entirely through the same and islocated close to the end of the square corresponding with the angle of the ordinary square. The tenon of the shorter leg of the square, which snugly. fits this mortise, preferably extends entirely through and to the opposite edge of the longer leg A.

Within the inner end of the longer leg is formed a groove 0, and within said groove is mounted a sliding block or bar D, said block being provided with ribs d upon its side edges, fitting corresponding guidinggrooves formed within the side Walls of the main groove 0. The tenon B is provided with a notch 12 close'to one shoulderand so located as to receive the end of the locking-block D.

For convenience in manipulating the block D it is provided inits'outer surface with a slightdepression or catch cL-which may be engaged by the point of a knife or any convenient object ofthat character. 7

The groove 0 extends to some little distance beyond the rear end of the slide D and'has a block E pivoted thereon by a pivot-pin c. This block is of such length that when it is thrown downward into the position shown by full lines in Fig. 2 or so that its outer edge coincides with the side edge of the square it will completely fill the remainder of the groove. hen in this position, it is impossible for the locking-block D to be moved outward from engagement with the notch in the tenon. The block E is controlled in position by a spring E, which is located within the groove 0 and beneath the blocks D and E. This spring presses upon the rear end of the block E and holds it downward in position, as shown in Fig. 2.

When it is desired to separate the two parts of the square, the rear end of the block E is forced downward until the block extendssubstantially'perpendicular to the edge of the square, as shown by the dotted lines in Fig. 2. This frees the locking-block D, so that it may be withdrawn and the shorter leg of the square be withdrawn from the mortise inthe longer leg. By this construction it is possitie to separate the two parts of the square, so that they'rnay be placed within a comparatively small box.

- Havingthus fully describedmy invention, I claim as new and desire to secure by Letters Patent+ 1. A square, having the two legs formed of separate pieces connected by a mortise and tenon, the tenon having a notch in one edge at its base, the mortise having a groove in its edge in line with said notch, a locking-bar mounted to slide in said groove and engage the notchin the tenon, and a pivoted block occupying the groove beyond the locking-bar, andwhen longitudinally extended, filling the remainder of the groove, substantially as described. I

j 2. A square, having the two legs formed of separat pieces connected by a mortise and tenon, the tenon having a notch in one edge at its base, the mortise having a groove in its edge in line with said notch, a locking-bar mounted to slide in said groove and engage the notch in the tenon, and apivoted block occupying the groove beyond the looking-bar, and when longitudinally extended, filling the 1 remainder of the groove, and a spring engaging said block to hold it when placed either longitudinally or transversely, substantially as described.

ROBERT I-I. MILLER. \Vitnesses:

CHARLTON A. REED, JOHN D. GUERIN. 

